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为加快低质低产林改造,提高森林生产力,于1984年秋在浑江市花山林场进行了低产林的改造实验。现将具体作法和初步效果报告如下: 一、低改林分的确定在花山林场选择了以下五个类型的林分进行实验。 1.灌丛3.6ha,北向20度,中层暗棕壤,林木组成有假色械、胡枝子、榛子、稠李、少量杨桦等。 2.疏林地1.5ha,西向22度,中层暗棕壤,林木组成:3椴2柞1胡1榆1色1红1黄,林龄15年,平均胸径9.6cm,平均树高8.5m,郁闭度0.3,每公顷株数412株、蓄积20.3m~3。
In order to speed up the transformation of low-quality and low-yield forests and increase forest productivity, experiments were carried out in the autumn of 1984 in Huashan Forest Farm, Hunjiang City to reform low-yield forests. Now the specific practices and preliminary results are reported as follows: First, the determination of low-change forest in Huashan Forestry selected the following five types of forest experiments. 1. Shrub 3.6ha, north to 20 degrees, the middle dark brown soil, composed of fake color machinery, Lespedeza, hazelnut, thick plum, a small amount of birch and so on. 2 sparse woodland 1.5ha, west to 22 degrees, middle dark brown soil, forest composition: 3 linden 2 oak 1 Hu 1 Yu 1 color 1 red 1 yellow, age 15 years, average diameter 9.6cm, average tree height 8.5m, Density 0.3, 412 plants per hectare, accumulation of 20.3m ~ 3.